Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 4, Problem 13SQ
To determine
Explain the reason for using circle to represent a coil in a motor control schematic.
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Chapter 4 Solutions
Electric Motor Control
Ch. 4 - Identify the following symbols.Ch. 4 - Electrical symbols usually conform to which...Ch. 4 - What do the following abbreviations stand for? a....Ch. 4 - Single-pole and double-pole switch symbols are...Ch. 4 - The symbol shown is a a. polarized capacitor. b....Ch. 4 - The symbol shown is a a. normally closed float...Ch. 4 - The symbol shown is a(n) a. iron core transformer....Ch. 4 - The symbol shown is a a. normally open pressure...Ch. 4 - The symbol shown is a a. double-acting push...Ch. 4 - If you were installing the circuit in Figure 412,...
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- How to avoid the effect of the high current at starting of the Motor? a. variable resistor is connected in series with Armature circuit b. variable resistor is connected in parallel with Armature circuit c. variable resistor is connected in series with field circuit d. None of the above Clear my choicearrow_forwardWhy small voltage is built up immediately in rotating shunt machine eve without field excitation?arrow_forwardwhat is slip ring induction motor ?arrow_forward
- 15/ What is the name of the speed control by varying the field current of the DC motor? a. Flux control method b. None of the above c. Armature control method d. Voltage control methodarrow_forwardA 6 pole dc armature has Simplex lap connected 720 conductors, 3 turns per coil and 4 coil sides per slot. Determine the number of slots in the armature and state whether equalizers can be employed or not ?arrow_forwardWhat is the name of the speed control by varying the flux of the DC motor? a. Flux control method b. Voltage control method c. None of the above d. Armature control methodarrow_forward
- explain any one method of speed control of Induction motor with respect to rotor side with diagram. please i need with clear handwriting because i send the quation befor but some word not clear and i cannot be read.thanksarrow_forwardWhat type of protective characteristics are used for Induction motor protection?arrow_forward
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